Mechanism for working pulpous material



Jan. 25

A. P. GERHARDT IECHANISH FOR WDRKING PULPOUS MATERIAL Filed Jan. 25, 1923 jizz/ezz or 996191697 Ger/lard! named Jam. 25, 1921.

UNITED STATES PATENT OFFICE.

ADELBERT PAUL GERHARDT, OF CHICAGO, ILLINOIS, ASSIGN OR TO WESTERN TRIO COMPANY, INCORPORATED, OF NEW YORK, N. sY-, A CORPORATION OF NEW YORK.

MECHANISM FOR WORKING PUQLZPOUS MATERIAL.

Application filed January 23,1928; Serial No. 614,353.

This invention relates to improvements in mechanism for working pulpous materlal,

and more particularly to mechanism for forming such material to constitute a homo- 6 geneous coating for 'cores such as rod, wire,

and the like. v

An object of the invention is to provide a forming mechanism which will operate upon the pulpous material so as to forni it into a homogeneous and uniform coating.

Another object of the invention is to produce such a forming mechanism which may be adjusted to regulate the pressure that is exerted on the coating material during the 15 forming operation and thus control the density of the formed coating.

Still another object of the invention is to provide a forming mechanism which may be operated at high speed and will -not strip the coating material from the core during the formin operation.

Other jects and advantages of .the mechanism will more fully appear from the following description. I

,Mechanisms made in accordance with this invention are particularly well adapted for .use in connection with the method and ap paratus for coating cores disclosed in the copending applications of Walker and March Serial No. 547,923, filed March 29, 1922, and Serial No. 547,924, filed March 29, 1922,-respectively, but it is to be understood that the invention is not limited to such use but only in so far as defined by the appended claims. The drawings illustrate one'embodiment of the invention in which, Fig. 1 is a. side elevation partly in section, of a forming mechanism embodying the features of the invention;

Fig. 2=isa verticalsectional view taken on the line 22 of Fig. 1;

Fig. 3 is a horizontal view taken on the 'line3-3 ofFig. 1;

Figs. 4 and 5am enlarged vertical sectional-views, showin the form of the pulp coating as it is dellvered from the liquid containing pulp and the squeezing rolls. re-

specti'vely, and

Fi 6 and '7'are enlarged vertical sections. .views showing the form of the 'pulg coating ,during the forming operation an after the completion of the forming opera- 7 tion respectively.

Mechanisms made in accordance with the present invention are designed to work pulpone material applied to a coreand are particularly adapted to operate in conjunction with the apparatus shown in'the co-pending ap licationofWValker and March, Serial No. 54 ,924, filed March 29, 1922. This appara- 60 tus,briefiy described, comprises a drum for passing the core through a liquid containing pul in'such manner that pulp is applied to to t e core as shown in Fig. 4', the coated core ,then being passed between squeezing rolls which serve to form the pulp coating into a thin ribbon extending at opposite sides of the core, as shown in Fig. 5. For adetailed description-of the operation of this apparatusreference is made to the co-pending application above referred to. The forming mechanism embodying the features of the present invention is designed a i to receive the coated core from the squeezing rolls and wrap the projecting edges of the ribbon around the core and around each other until it conforms substantially to the I shape of the core, the appearance of'the coating after it is first acted upon by the former and after the forming action is completed beingshown clearly in Figs. 6 and 7.

The former comprises two cup shaped collars 10 and 11 held together'in spaced relation by means of rods 12. Integral with each of said collars 10 and 11 is' a sleeve 13 5 and 14 respective] which are rotatably mounted in suitab e bearings. A pulley (not shown) may be. secured to either of the sleeves 13 or 14 and serves as means for driving the forming mechanism. .Two plates 15 and 16 have projecting tongues which are bent around two of the rods 12 to ivotally-support the plates inopposed re ation toeach other, as shown in Fig. 2. Compression s rings 17 engage .the rear faces of .6

each of. t e plates .15 and 16 and tend to forcethem together. The springs 17 are put 1 under the requisite compression by means of adjusting screws 18 which are mounted in brackets 19 secured to the rods 12. The $0. ends of the. plates 15 and '16, which are adapted to first receive the coated core, are.

, lightly and thereby-do not tend to strip it flared outwardl so as to graduall wrap the edges of t e ribbon around t e core without stripping it from the coreas it enters the forming lates 15 and 16 throu h the sleeve 13. T e core passes from t e forming plates through the sleeve 14. I

The forming plates 15 and 16 are rotated rapidly around the core and pulp coating by the means previously referred to, and the,

.the opposite forming plate in the manner shown in Fig. 2. Each of the stops comprises a lug 21 having a threaded shank 22 threaded within an opening in each of the plates 16 and 17. Lock nuts 23 serve to hold the shank in any adjusted position. These stops limit the amount of pressure that may be exerted upon the coating material by the forming plates 15 and 16 as they are pressed thereagainst by the springs 17. By adjusting these stops, this ressure may be set at the desired degree. T e stops may be adjusted 'so that after the ribbons are wrapped around the core they engage the outer periphery of the formed. coating from the core. In the event that, due to any cause, the coating presented between the plates is considerably thicker than the stops can accommodate, the enlarged portion of the core will spread the plates 15 and 16 against the compression springs 17 to allow its passage between the plates.

It will readily be understood that the densit of the coating is also controlled by the ad ustable stops, since they may be set to permit light or heavy pressure upon the coreefter the wrapping operation is completed.

What is claimed is: v

1. In a mechanism for working pulpous material on a core in strand 'form so that the said material constitutes a coating for the core throughout its entire length, a member engaging said material to shape it around the core, means tending to move saidf melnber into engagementwith the core, and means for spacing said member a pred termined distance from the core.

2. In a mechanism for working pulpous material on a core so that the said material 1 apart.

' opposite sides 3. In a mechanism for workin pulpous material on a core so that the sai material constitutes a coating for the core, a rotatable plate-like member engaging said material to shape it around the core, means tending to move said member into engagement with the core, and means for spacing said member a predetermined distance from the core.

4. In a mechanism for Working pulpous material on a core so that the said material constitutes a coating for the core, while traveling in substantially a straight line, a member engaging said-material to shape it around the core, means tending to move said member into engagement with the core, and means for spacing said member a fixed, predetermined distance from the core.

5. In a mechanism for working pulpous material on a continuously advancing elongated core so that the said material constitutes a coating for the core, a rotatable member engaging said material to shape it around the core, means tending to move said member into enga ement with the core and adjustable means or spacing said member a fixed, predetermined distance from the core.

6. In a mechanism for working pulpous material on a core so that the said material constitutes a coating therefor, a rotatable member, said member disposed to normally engage the core during its rotation around the core for progressively forming said material on, the core, and means for spacing said member a predetermined distance from the core.

7. In a mechanism for workin pulpous material on a core so that the sai material constitutes a coating therefor, a pair of rotatable members engaging said material on opposite sides of the core to shape the material around the core, said members disposed to normally engage the core during a rotation thereof, and means for spacing said member a predetermined distance from the core. I

8. In a mechanismfor working pulpous material on a core so that the said material conforms to the shape of the core, a pair of members en aging said material on opposite sides of t e core to shape the material around the core and means for spacing said members a predetermined distance apart.

9.'In a mechanism for working pulpous I material on a core so that the said material constitutes a coating therefor, spring pressed rotatable members engaging said material on .fiopposite sides of the core to shape the material around the core, and means for acing said members a predetermined SP distance 10. In a mechanism for workin pulpous mater al on acore so that the sai material conforms to the shape of the core, ring pressed members :Egaging said material on core to shape the ma- XII terial around the core, and means for spacing said members a fixed, predetermined dlstance apart.

11. In a mechanism for working pulpous material on a core so that the said material conforms to the shape of the core, niembers engaging said material on opposite. sides of the core to'shape the material around the core, and a stop carried by one of said members and engaging the other to space said members a predetermined distance apart.

12. In a mechanism for working pnlpous material on a core so that the said material conforms to the shape of the core, members engaging/said material on opposite sides of the core to shape the material around the core, and an adjustable stop carriedby one of said members and engaging the other to space said members a predetermined distance apart. I

13. In a mechanism for working pulpous material on a core so that the said material a constitutes a coating therefor, spring pressed rotatable plate-like members engaging said .material on opposite sides of the core to v shape the material around the core, and a stop carried by each' of said members and engaging the other members forspacing said mem ers a predetermined distance apart.

- 14. In a mechanism for workin' pulpous material on a core so that the sai material I conforms to the shape of the core, spring pressed members engaging said material on op osite sides of the core to shape thematerial around the core, and a stop carried by each .of said members and engaging the other member for spacing said members apredetermined distance apart. I

15. Ina mechanism'for workin pulpous materialon a core so that the sai material conforms to the shape-of the core, spring,-

pressed members engaging said material on opposite sides of the core 'toshape the materlal' around the core 'and an adjustable i stop carried by each of said members and en 

